Tightening straps for bag

ABSTRACT

The present invention provides tightening straps for a bag which are tightening straps for a bag that are coupled and installed on a bag having shoulder straps on both sides thereof, and which comprise: an upper left side strap having one end connectedly coupled to a left side shoulder strap; an upper right side strap having one end connectedly coupled to a right side shoulder strap; a lower left side strap having one end connectedly coupled to the bottom left side of a bag; a lower right side strap having one end connectedly coupled to the bottom right side of the bag; first coupling parts installed on the other end of the upper left side strap and the other end of the lower right side strap, and coupling the other end of the upper left side strap and the other end of the lower right side strap in a detachable manner; and a second coupling parts installed on the other end of the upper right side strap and the other end of the lower left side strap, and coupling the other end of the upper right side strap and the other end of the lower left side strap in a detachable manner. Thus, the tightening straps for a bag have the upper left side strap and the lower right side strap which are connected to each other via the first coupling parts and the upper right side strap and the lower left side strap which are connected to each other via the second coupling parts disposed tightly in an “X” shape on the front of a user&#39;s upper body in a state in which the user is carrying the bag using shoulder straps, and can maintain the bag in a secure, tight state on the user&#39;s back.

TECHNICAL FIELD

The present disclosure relates to tightening straps and, more particularly, to tightening straps for a bag that allow the bag to be maintained in close contact with the back of a wearer while the wearer carries the bag on his or her shoulders.

BACKGROUND ART

In general, a bag is provided with a space to store goods, and has shoulder straps provided on the rear side of the bag such that a wearer can carry the bag on his or her shoulders, fastening straps that pull the shoulder straps to each other on the shoulders of the wearer, and waistbands provided on a waist portion such that the bag is in close contact with the body of the wearer when the waistbands are tightened. Therefore, when the wearer moves while carrying the bag, the bag is prevented from swaying behind the wearer's back. To this end, a belt is formed on the lower side of the bag to secure the bag around the waist of a wearer.

However, such a bag has a problem that it is difficult to maintain a stable close contact state between the bag and the wearer's back since the fastening straps and the belt only serve to fix the bag on the chest and waist portions of the user.

Such a conventional bag is disclosed in Korean Registered Utility Model No. 20-0204360 (15 Sep. 2000)

DISCLOSURE Technical Problem

Accordingly, the present invention has been made in an effort to solve the above-mentioned problems and disadvantages occurring in the prior arts, and the present invention aims to provide tightening straps for a bag that allow the bag to be stably fixed behind the back of a user in a state, in which the user carries the bag on his or her shoulders.

Technical Solution

The present disclosure provides tightening straps for a bag which are coupled and installed on a bag having shoulder straps on both sides thereof, comprising an upper left side strap having one end connectedly coupled to a left side shoulder strap, an upper right side strap having one end connectedly coupled to a right side shoulder strap, a lower left side strap having one end connectedly coupled to the bottom left side of the bag, a lower right side strap having one end connectedly coupled to the bottom right side of the bag, a first coupling part installed on the other end of the upper left side strap and the other end of the lower right side strap, and coupling the other end of the upper left side strap and the other end of the lower right side strap in a detachable manner, and a second coupling part installed on the other end of the upper right side strap and the other end of the lower left side strap, and coupling the other end of the upper right side strap and the other end of the lower left side strap in a detachable manner.

Advantageous Effects

The tightening straps for a bag, according to the present disclosure, can maintain a bag in a stable and tight state on the back of a user by enabling the upper left side strap and the lower right side strap, which are connected to each other via the first coupling part, and the upper right side strap and the lower left side strap, which are connected to each other via the second coupling part, to be arranged tightly in an “X” shape on the front of the user's upper body in a state, in which the user is carrying the bag using the shoulder straps.

DESCRIPTION OF DRAWINGS

FIG. 1 is a view for showing an installation state of tightening straps for a bag according to an embodiment of the present disclosure.

FIG. 2 is a view for showing an installation state of tightening straps for a bag according to another embodiment of the present disclosure, and

FIG. 3 is a view for showing an installation state of tightening straps for a bag according to another embodiment of the present disclosure.

BEST MODE FOR CARRYING OUT THE INVENTION

The present disclosure provides tightening straps for a bag which are coupled and installed on a bag having shoulder straps on both sides thereof, comprising an upper left side strap having one end connectedly coupled to a left side shoulder strap, an upper right side strap having one end connectedly coupled to a right side shoulder strap, a lower left side strap having one end connectedly coupled to the bottom left side of the bag, a lower right side strap having one end connectedly coupled to the bottom right side of the bag, a first coupling part installed on the other end of the upper left side strap and the other end of the lower right side strap, and coupling the other end of the upper left side strap and the other end of the lower right side strap in a detachable manner, and a second coupling part installed on the other end of the upper right side strap and the other end of the lower left side strap, and coupling the other end of the upper right side strap and the other end of the lower left side strap in a detachable manner.

Mode for Invention

Hereinafter, the present invention will be described in detail in accordance with preferred embodiments thereof with reference to the accompanying drawings.

FIG. 1 is a view for showing an installation state of tightening straps for a bag according to an embodiment of the present disclosure. Referring to FIG. 1, tightening straps 100 for a bag, according to an embodiment of the present invention, includes an upper left side strap 110, an upper right side strap 120, a lower left side strap 130, a lower right side strap 140, a first coupling part 150, and a second coupling part 160. The tightening straps 100 for a bag are coupled to a bag 10 a that has a receiving portion inside, wherein shoulder strap 11 a, 12 a are provided on the both sides of the bag 10 a, that is, on the left side and the right side of the bag 10 a respectively such that a user can carry the bag 10 a on his or her left side shoulder and right side shoulder.

The upper left side strap 110 and the upper right side strap 120 are respectively connected to the lower left side strap 130 and the lower right side strap 140, which will be explained hereinafter, in a state, in which the upper left side strap 110 and the upper right side strap 120 are respectively connected to the shoulder strap 11 a, 12 a of the bag 10 a. Herein, the upper left side strap 110 is connected to the lower right side strap 140 in a state, in which the upper left side strap 110 is connected to the shoulder strap 11 a positioned at the left side of the bag 10 a. That is, one end of the upper left side strap 110 in the lengthwise direction thereof can be connectedly coupled to one side of the shoulder strap 11 a positioned at the left side of the bag 10 a, more preferably, to a portion of the shoulder strap 11 a corresponding to the chest portion of the user. Herein, even though a ring member 13 a is illustrated to be coupled to the one side of the shoulder strap 11 a positioned at the left side of the bag 10 a so as to be connectedly coupled to the one end of the upper left side strap 110 in the lengthwise direction thereof but is not limited thereto, it is of course possible that the one end of the upper left side strap 110 in the lengthwise direction thereof can be connectedly coupled to the shoulder strap 11 a positioned at the left side of the bag 10 a through a sewing operation or coupled thereto through a buckle member (not shown) in a detachable manner.

Further, the upper right side strap 120 is connected to the lower left side strap 130 in a state, in which the upper right side strap 120 is connected to the shoulder strap 12 a positioned at the right side of the bag 10 a. That is, one end of the upper right side strap 120 in the lengthwise direction thereof can be connectedly coupled to one side of the shoulder strap 12 a positioned at the right side of the bag 10 a, more preferably, to a portion of the shoulder strap 12 a corresponding to the chest portion of the user. Herein, even though a ring member 14 a is illustrated to be coupled to the one side of the shoulder strap 12 a positioned at the right side of the bag 10 a so as to be connectedly coupled to the one end of the upper right side strap 120 in the lengthwise direction thereof but is not limited thereto, it is of course possible that the one end of the upper right side strap 120 in the lengthwise direction thereof can be connectedly coupled to the shoulder strap 12 a positioned at the right side of the bag 10 a through a sewing operation or coupled thereto through a buckle member (not shown) in a detachable manner.

The lower left side strap 130 and the lower right side strap 140 are respectively connected to the upper left side strap 110 and upper right side strap 120 in a state, in which the lower left side strap 130 and the lower right side strap 140 are respectively connected to the bottom left side and the bottom right side of the bag 10 a.

Herein, the lower left side strap 130 is connected to the upper right side strap 120 in the state, in which the lower left side strap 130 is connected to the bottom left side of the bag 10 a. That is, one end of the lower left side strap 130 in the lengthwise direction thereof is connectedly coupled to the bottom left side of the bag 10 a and the other end of the lower left side strap 130 in the lengthwise direction thereof is connected to the upper right side strap 120 through the first coupling part 150, which will be explained hereinafter. Herein, the one end of the lower left side strap 130 in the lengthwise direction thereof is connectedly coupled to the bottom left side of the bag 10 a through a sewing operation but is not limited thereto, wherein it is of course possible that the one end of the lower left side strap 130 in the lengthwise direction thereof can be coupled to a ring member (not shown), which is additionally provided on the bottom left side of the bag 10 a, or coupled thereto through a buckle member (not shown) in a detachable manner.

Further, the lower right side strap 140 is connected to the upper left side strap 110 in the state, in which the lower right side strap 140 is connected to the bottom right side of the bag 10 a. That is, one end of the lower right side strap 140 in the lengthwise direction thereof is connectedly coupled to the bottom right side of the bag 10 a and the other end of the lower left side strap 130 in the lengthwise direction thereof is connected to the upper left side strap 110 through the second coupling part 160, which will be explained hereinafter. Herein, the one end of the lower left side strap 130 in the lengthwise direction thereof is connectedly coupled to the bottom right side of the bag 10 a through a sewing operation but is not limited thereto, wherein it is of course possible that the one end of the lower left side strap 130 in the lengthwise direction thereof can be coupled to a ring member (not shown), which is additionally provided on the bottom right side of the bag 10 a, or coupled thereto through a buckle member (not shown) in a detachable manner.

The first coupling part 150 connects and couples the other end of the upper left side strap 110 in the lengthwise direction thereof and the other end of the lower right side strap 140 in the lengthwise direction thereof. More preferably, the first coupling part 150 connects and couples the other end of the upper left side strap 110 in the lengthwise direction thereof and the other end of the lower right side strap 140 in the lengthwise direction thereof to each other in a detachable manner such that a user can selectively carry out the coupling or release the coupling.

The first coupling part 150 is provided on the edge portion of the other end of the upper left side strap 110 in the lengthwise direction thereof and the edge portion of the other end of the lower right side strap 140 in the lengthwise direction thereof. Herein, the first coupling part 150 is illustrated as a buckle member but is not limited thereto, wherein it is of course possible that snap buttons or any other connection members enabling detachable coupling can be selected and used as the first coupling part 150. That is, the first coupling part 150 may include an insert buckle main body 151 coupled to the edge portion of the other end of the upper left side strap 110 in the lengthwise direction thereof and an insert buckle head 152 coupled to the edge portion of the other end of the lower right side strap 140 in the lengthwise direction thereof. Herein, the insert buckle head 152 may have a connection ring portion 153 such that the other end of the lower right side strap 140 in the lengthwise direction thereof is connected to the connection ring portion 153 in a wound state so as to adjust a connection length with respect to the upper left side strap 110. Herein, even though it is illustrated that the insert buckle main body 151 is connectedly coupled to the upper left side strap 110 and the insert buckle head 152 is connectedly coupled to the lower right side strap 140, it is of course possible that the insert buckle main body 151 is connectedly coupled to the lower right side strap 140 and the insert buckle head 152 is connectedly coupled to the upper left side strap 110 without limitation.

Herein, when applying snap buttons to the first coupling part 150, a plurality of snap buttons are provided to be spaced from each other on the other end of the upper left side strap 110 in the lengthwise direction thereof and the other end of the lower right side strap 140 in the lengthwise direction thereof respectively such that mutual coupling positions can be adjusted.

The first coupling part 150 connects and couples the other end of the upper left side strap 110 in the lengthwise direction thereof and the other end of the lower right side strap 140 in the lengthwise direction thereof such that the upper left side strap 110 and the lower right side strap 140, which are coupled to each other, are arranged diagonally in a direction from an upper left side to a lower right side on the front of a user's upper body, thereby stably maintaining a close contact state and preventing the center of gravity of the bag 10 a from leaning to one side in a state, in which the user carries the bag on his back.

The second coupling part 160 connects and couples the other end of the upper right side strap 120 in the lengthwise direction thereof and the other end of the lower left side strap 130 in the lengthwise direction thereof. More preferably, the second coupling part 160 connects and couples the other end of the upper right side strap 120 in the lengthwise direction thereof and the other end of the lower left side strap 130 in the lengthwise direction thereof to each other in a detachable manner such that the user can selectively carry out the coupling or release the coupling.

The second coupling part 160 is provided on the edge portion of the other end of the upper right side strap 120 in the lengthwise direction thereof and the edge portion of the other end of the lower left side strap 130 in the lengthwise direction thereof. Herein, the second coupling part 160 is illustrated as a buckle member but is not limited thereto, wherein it is of course possible that snap buttons or any other connection members enabling detachable coupling can be selected and used as the second coupling part 160. That is, the second coupling part 160 may include an insert buckle main body 161 coupled to the edge portion of the other end of the upper right side strap 120 in the lengthwise direction thereof and an insert buckle head 162 coupled to the edge portion of the other end of the lower left side strap 130 in the lengthwise direction thereof. Herein, the insert buckle head 162 may have a connection ring portion 163 such that the other end of the lower left side strap 130 in the lengthwise direction thereof is connected to the connection ring portion 163 in a wound state so as to adjust a connection length with respect to the upper right side strap 120. Herein, even though it is illustrated that the insert buckle main body 161 is connectedly coupled to the upper right side strap 120 and the insert buckle head 162 is connectedly coupled to the lower left side strap 130, it is of course possible that the insert buckle main body 161 is connectedly coupled to the lower left side strap 130 and the insert buckle head 162 is connectedly coupled to the upper right side strap 120 without limitation.

Herein, when applying snap buttons to the second coupling part 160, a plurality of snap buttons are provided to be spaced from each other on the other end of the upper right side strap 120 in the lengthwise direction thereof and the other end of the lower left side strap 130 in the lengthwise direction thereof respectively such that mutual coupling positions can be adjusted.

The second coupling part 160 connects and couples the other end of the upper right side strap 120 in the lengthwise direction thereof and the other end of the lower left side strap 130 in the lengthwise direction thereof such that the upper right side strap 120 and the lower left side strap 130, which are coupled to each other, are arranged diagonally in a direction from an upper right side to a lower left side on the front of the user's upper body, thereby stably maintaining a close contact state and preventing the center of gravity of the bag 10 a from leaning to one side in a state, in which the user carries the bag on his back.

As described hereinabove, the first coupling part 150 diagonally connects and couples the other end of the upper left side strap 110 in the lengthwise direction thereof and the other end of the lower right side strap 140 in the lengthwise direction thereof to each other, and the second coupling part 160 diagonally connects and couples the other end of the upper right side strap 120 in the lengthwise direction thereof and the other end of the lower left side strap 130 in the lengthwise direction thereof to each other. Therefore, in the state, in which the user carries the bag with the shoulder strap 11 a, 12 a, the upper left side strap 110 and the lower right side strap 140 that are connected to each other and the upper right side strap 120 and the lower left side strap 130 that are connected to each other are closely arranged in an “X” shape on the front of the user's upper body, thereby enabling the bag to be maintained in a close contact state on the user's back and in a comfortably worn state while moving the center of gravity of the bag 10 a to the center on the front of the user's upper body.

FIG. 2 is a view for showing an installation state of tightening straps for a bag according to another embodiment of the present disclosure. Referring to FIG. 2, tightening straps 200 for a bag, according to another embodiment of the present disclosure, includes a left side connection strap 210, a right side connection strap 220 and a third coupling part 230. The tightening straps 200 for a bag are coupled and installed on a bag 10 b that has a receiving portion inside, wherein shoulder strap 11 a, 12 a are provided on the both sides of the bag 10 b, that is, on the left side and the right side of the bag 10 b respectively such that a user can carry the bag 10 b on his or her left side shoulder and right side shoulder.

The left side connection strap 210 is coupled to the bottom left side of the bag 10 b in a state, in which the left side connection strap 210 is connected to the shoulder strap 11 b of the bag 10 b. That is, one end of the left side connection strap 210 in the lengthwise direction thereof is connectedly coupled to one side of the shoulder strap 11 b positioned at the left side of the bag 10 b, more preferably, to a portion of the shoulder strap 11 b corresponding to the chest portion of the user. Herein, even though a ring member 13 b is illustrated to be coupled to the one side of the shoulder strap 11 b positioned at the left side of the bag 10 b so as to be connectedly coupled to the one end of the left side connection strap 210 in the lengthwise direction thereof but is not limited thereto, it is of course possible that the one end of the left side connection strap 210 in the lengthwise direction thereof can be connectedly coupled to the shoulder strap 11 b positioned at the left side of the bag 10 b through a sewing operation or coupled thereto through a buckle member (not shown) in a detachable manner.

Further, the other end of the left side connection strap 210 in the lengthwise direction thereof is connectedly coupled to the bottom left side of the bag 10 b. Herein, the other end of the left side connection strap 210 in the lengthwise direction thereof is connectedly coupled to the bottom left side of the bag 10 b through a sewing operation but is not limited thereto, wherein it is of course possible that the other end of the left side connection strap 210 in the lengthwise direction thereof can be coupled to a ring member (not shown), which is additionally provided on the bottom left side of the bag 10 b, or coupled thereto through a buckle member (not shown) in a detachable manner. When connecting the other end of the left side connection strap 210 in the lengthwise direction thereof to the bag 10 b through the ring member or the buckle member, it is of course possible to adjust a connection length with respect to the bag 10 b.

The right side connection strap 220 is coupled to the bottom right side of the bag 10 b in a state, in which the right side connection strap 220 is connected to the shoulder strap 12 b of the bag 10 b. That is, one end of the right side connection strap 220 in the lengthwise direction thereof is connectedly coupled to one side of the shoulder strap 12 b positioned at the right side of the bag 10 b, more preferably, to a portion of the shoulder strap 12 b corresponding to the chest portion of the user. Herein, even though a ring member 14 b is illustrated to be coupled to the one side of the shoulder strap 12 b positioned at the right side of the bag 10 b so as to be connectedly coupled to the one end of the right side connection strap 220 in the lengthwise direction thereof but is not limited thereto, it is of course possible that the one end of the right side connection strap 220 in the lengthwise direction thereof can be connectedly coupled to the shoulder strap 12 b positioned at the right side of the bag 10 b through a sewing operation or coupled thereto through a buckle member (not shown) in a detachable manner.

Further, the other end of the right side connection strap 220 in the lengthwise direction thereof is connectedly coupled to the bottom right side of the bag 10 b. Herein, the other end of the right side connection strap 220 in the lengthwise direction thereof is connectedly coupled to the bottom right side of the bag 10 b through a sewing operation but is not limited thereto, wherein it is of course possible that the other end of the right side connection strap 220 in the lengthwise direction thereof can be coupled to a ring member (not shown), which is additionally provided on the bottom right side of the bag 10 b, or coupled thereto through a buckle member (not shown) in a detachable manner. When connecting the other end of the right side connection strap 220 in the lengthwise direction thereof to the bag 10 b through the ring member or the buckle member, it is of course possible to adjust a connection length with respect to the bag 10 b.

The third coupling part 230 connects and couples one side of the left side connection strap 210 and one side of the right side connection strap 220. More preferably, the third coupling part 230 connects and couples the one side of the left side connection strap 210 and the one side of the right side connection strap 220 to each other in a detachable manner such that the user can selectively carry out the coupling or release the coupling.

The third coupling part 230 is provided at the one side of the left side connection strap 210 and the one side of the right side connection strap 220. Herein, the third coupling part 230 is illustrated as a buckle member but is not limited thereto, wherein it is of course possible that snap buttons or any other connection members enabling detachable coupling can be selected and used as the third coupling part 230. That is, the third coupling part 230 may include an insert buckle main body 231 coupled to the one side of the left side connection strap 210 and an insert buckle head 232 coupled to the one side of the right side connection strap 220. Herein, even though it is illustrated that the insert buckle main body 231 is connectedly coupled to the left side connection strap 210 and the insert buckle head 232 is connectedly coupled to the right side connection strap 220, it is of course possible that the insert buckle main body 231 is connectedly coupled to the right side connection strap 220 and the insert buckle head 232 is connectedly coupled to the left side connection strap 210 without limitation.

As described hereinabove, the third coupling part 230 connects and couples the one side of the left side connection strap 210 and the one side of the right side connection strap 220 to each other such that the left side connection strap 210 and the right side connection strap 220 are closely arranged in an “X” shape on the front of the user's upper body, thereby enabling the bag to be maintained in a close contact state on the user's back and in a comfortably worn state while moving the center of gravity of the bag 10 b to the center on the front of the user's upper body.

FIG. 3 is a view for showing an installation state of tightening straps for a bag according to another embodiment of the present disclosure. Referring to FIG. 3, tightening straps 300 for a bag, according to another embodiment of the present disclosure, includes an upper connection strap 310, a lower connection strap 320 and a fourth coupling part 330. The tightening straps 300 for a bag is coupled and installed on a bag 10 c that has a receiving portion inside, wherein a shoulder strap 11 c is provided on one side of the bag 10 c such that a user can carry the bag 10 c on one side shoulder.

The upper connection strap 310 is coupled to the lower connection strap 320 in a state, in which the upper connection strap 310 is connected to the shoulder strap 11 c disposed at one side of the bag 10 c. That is, one end of the upper connection strap 310 in the lengthwise direction thereof is connectedly coupled to one side of the shoulder strap 11 c of the bag 10 b, more preferably, to a portion of the shoulder strap 11 c corresponding to the chest portion of the user. Herein, even though a ring member 14 c is illustrated to be coupled to the one side of the shoulder strap 11 c of the bag 10 b so as to be connectedly coupled to the one end of the upper connection strap 310 in the lengthwise direction thereof but is not limited thereto, it is of course possible that the one end of the upper connection strap 310 in the lengthwise direction thereof can be connectedly coupled to the one side of the shoulder strap 11 c positioned at one side of the bag 10 c through a sewing operation or coupled thereto through a buckle member (not shown) in a detachable manner.

The lower connection strap 320 is coupled to the upper connection strap 310 in a state, in which the lower connection strap 320 is connected to the lower end of the other side of the bag 10 c. That is, one end of the lower connection strap 320 in the lengthwise direction thereof is connectedly coupled to the bottom left side portion of the bag 10 c, and the other end of the lower connection strap 320 in the lengthwise direction thereof is connected to the upper connection strap 310 through the fourth coupling part 330, which will be explained hereinafter. Herein, the one end of the lower connection strap 320 in the lengthwise direction thereof is connectedly coupled to the lower end of the other side of the bag 10 c through a sewing operation but is not limited thereto, wherein it is of course possible that the one end of the lower connection strap 320 in the lengthwise direction thereof can be coupled to a ring member (not shown), which is additionally provided on lower end of the other side of the bag 10 c, or coupled thereto through a buckle member (not shown) in a detachable manner.

The fourth coupling part 330 connects and couples the other end of the upper connection strap 310 in the lengthwise direction thereof and the other end of the lower connection strap 320 in the lengthwise direction thereof. More preferably, the fourth coupling part 330 connects and couples the other end of the upper connection strap 310 in the lengthwise direction thereof and the other end of the lower connection strap 320 in the lengthwise direction thereof to each other in a detachable manner such that the user can selectively carry out the coupling or release the coupling.

The fourth coupling part 330 is provided on the edge portion of the other end of the upper connection strap 310 in the lengthwise direction thereof and the edge portion of the other end of the lower connection strap 320 in the lengthwise direction thereof. Herein, the fourth coupling part 330 is illustrated as a buckle member but is not limited thereto, wherein it is of course possible that snap buttons or any other connection members enabling detachable coupling can be selected and used as the fourth coupling part 330. That is, the fourth coupling part 330 may include an insert buckle main body 331 coupled to the edge portion of the other end of the upper connection strap 310 in the lengthwise direction thereof and an insert buckle head 332 coupled to the edge portion of the other end of the lower connection strap 320 in the lengthwise direction thereof. Herein, the insert buckle head 332 may have a connection ring portion 333 such that the other end of the lower connection strap 320 in the lengthwise direction thereof is connected to the connection ring portion 333 in a wound state so as to adjust a connection length with respect to the upper connection strap 310. Herein, even though it is illustrated that the insert buckle main body 331 is connectedly coupled to the upper connection strap 310 and the insert buckle head 332 is connectedly coupled to the lower connection strap 320, it is of course possible that the insert buckle main body 331 is connectedly coupled to the lower connection strap 320 and the insert buckle head 332 is connectedly coupled to the upper connection strap 310 without limitation.

Herein, when applying snap buttons to the fourth coupling part 330, a plurality of snap buttons are provided to be spaced from each other on the other end of the upper connection strap 310 in the lengthwise direction thereof and the other end of the lower connection strap 320 in the lengthwise direction thereof respectively such that mutual coupling positions can be adjusted.

The fourth coupling part 330 connects and couples the other end of the upper connection strap 310 in the lengthwise direction thereof and the other end of the lower connection strap 320 in the lengthwise direction thereof such that the upper connection strap 310 and the lower connection strap 320, which are connected to each other, are arranged diagonally in a direction from the upper portion of one side to the lower portion of the other side on the front of the user's upper body, thereby stably maintaining a close contact state and preventing the center of gravity of the bag 10 a from leaning to one side in a state, in which the user carries the bag 10 c with the single shoulder strap 11 c.

As described hereinabove, the tightening straps 300 for a bag according to another embodiment of the present disclosure can stably maintain the close contact state in the state, in which the user carries the bag 10 c with the single shoulder strap 11 c on his or her back, such that the arm of the user at the opposite side of the shoulder strap 11 c is not disturbed by the bag 10 c and thus the user can move more freely.

Although the present disclosure has been described with reference to the embodiments shown in the drawings, it is to be understood by those skilled in the art that the present disclosure is by way of example only and that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Therefore, the true scope of technical protection of the present invention should be determined by the technical idea of the appended claims.

INDUSTRIAL APPLICABILITY

The present disclosure can be used for manufacturing a bag. 

1. Tightening straps for a bag which are coupled and installed on a bag having shoulder straps on both sides thereof, comprising: an upper left side strap having one end connectedly coupled to a left side shoulder strap; an upper right side strap having one end connectedly coupled to a right side shoulder strap; a lower left side strap having one end connectedly coupled to the bottom left side of the bag; a lower right side strap having one end connectedly coupled to the bottom right side of the bag; a first coupling part installed on the other end of the upper left side strap and the other end of the lower right side strap, and coupling the other end of the upper left side strap and the other end of the lower right side strap in a detachable manner; and a second coupling part installed on the other end of the upper right side strap and the other end of the lower left side strap, and coupling the other end of the upper right side strap and the other end of the lower left side strap in a detachable manner.
 2. The tightening straps for a bag according to claim 1, wherein the first coupling part and the second coupling part form a buckle member.
 3. The tightening straps according to claim 1, wherein the first coupling part and the second coupling part are snap buttons.
 4. Tightening straps for a bag which are coupled and installed on a bag having shoulder straps on both sides thereof, comprising: a left side connection strap having one end connectedly coupled to a left side shoulder strap and the other end connectedly coupled to a bottom left side of the bag; a right side connection strap having one end connectedly coupled to a right side shoulder strap and the other end connectedly coupled to a bottom right side of the bag; and a third coupling part installed on one side of the left side connection strap and one side of the right side connection strap, and coupling the one side of the left side connection strap and the one side of the right side connection strap in a detachable manner.
 5. The tightening straps for a bag according to claim 4, wherein the third coupling part is a buckle member.
 6. The tightening straps according to claim 4, wherein the third coupling part is to be snap buttons.
 7. Tightening straps for a bag which are coupled and installed on a bag having a shoulder strap on one side thereof, comprising: an upper connection strap having one end connectedly coupled to the shoulder strap; a lower connection strap having one end connectedly coupled to a lower end at the other side of the bag; and a fourth coupling part installed on the other end of the upper connection strap and the other end of the lower connection strap, and coupling the other end of the upper connection strap and the other end of the lower connection strap in a detachable manner.
 8. The tightening straps for a bag according to claim 7, wherein the fourth coupling part is a buckle member.
 9. The tightening straps according to claim 7, wherein the fourth coupling part is to be snap buttons. 